Filtering material



Patented Nov, 5, 11929 ,UNHTUM stares,

PATENT @FFHQE HENRY BLUMENBERG, JR., OF LOS ANGELES, CALIFORNIA.

FILTERING- MATERIAL I No Drawing;

My invention relates to a composition of matter intended for use as afiltering material.

It is an object ofthis invention to provide a filtering materialWhichhas superior purifying, bleaching and germicidal properties. It isadapted for-the purification, clarification and deodorizing of mineraloil distillates, such as gasoline, kerosene and lubricating oils, butmay alsobe used for the purification of Water, industrial Waste-liquorsand sewerage.

of matter hereinafter described and claimed. I take copper sulphateCuSQ, and calcium hypochlorite Ca(OCl) 2 and grind into a fineness of20400 screen mesh. The proportions of the tWo reagents are takenasindicated 20 by their molecular Weights.

sulphate'and calcium hypochlorite thus prepared I addfrom to 30 poundsof inert cellular material, preferably ground to a fine ness of aboutscreen mesh. Material suitable for this purpose is pumice, diatomaceousearth, charcoal, Wood fibre, asbestos and the like. The mixture ofcopper sulphate, calcium hypochlorite and inert material is formed intoa homogeneous mass.

The copper sulphate and calcium hypochlorite will not react in the drystate but only in the presence of Water or when in contact with organicmatter and will then form cal- 'cium sulphate, copper chloride, andchroline dioxide. It is the chlorine dioxide which is the powerfuloxidizing agent clarifying and deodorizing the liquids to be treated, aswell as destroying bacteria and germs.

. One-half to five percent, by weight, of the filtering material thusprepared is usually sufiicient for the clarification and deodorizationof mineral oil distillates.

' For the purification ofwater 25 pounds of the filtering material; toonemillion gallons of the Water is suflicient. Itshould be noted thatthe chlorinedioxide in contra -distinction to chlorine,,which issometimes used for My invention consists of the composition'hypochlorite.

To 100 pounds of the mixture of copper Water purification, leaves nodisagreeable Application filed December 15, 1927. Serial No. 240,212.

odor, the slight odor present resembling that of ozone.

y In the treatment of industrial waste liquors and of sewerage from100-to 500 pounds of the filtering material are usually required per onemillion gallons.

The liquids to be treated are usually passed through a'layer of thefiltering material under pressure or allowed to percolate by gravity.

In place ofthe copper sulphate, iron sulphate, either the ferrous or theferric, cobalt sulphate, or nickel sulphate, may be used; the quantitiestaken being by weight in the proportionof one molecular Weight of thesulphate to one molecular Weight of the calcium sulphates mentioned arethe soluble sulphates of the base metals of the eighth group of theperiodic table of elements.

It should be noted that the

